Combination-fuse.



P B NF MN 0 Tl T AA Hm 1 0M 0 c (Application filed Jan. 24, 1901.)

(NI. Modl.)

INVENTOR:

WITN ESSES ATTORNEY.

UNITED STATES PATENT QFFICE.

OSCAR HARTMANN, OF ESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPP, OF

SAME PLACE.

COMBINATION-FUSE.

SPEU IFIGATION formingpart of Letters Patent No. 674,163, dated May 14, 1901. Application filed January 24, 1901. Serial No. 44,525. (No model.)

Toall .zonom it may concern.-

Be it known thatI, OSCAR HARTMANN, engineer, a citizen of the German Empire, residing at 11 Bahnhofstrasse, Essemon-the-Ruhr,

- Germany, have invented certain new and useful Improvements in Combination-Fuses, of which the following is a'specification.

This invention has reference to improvements in" combination-fuses, and has for its I0 object to secure the movable parts of the time fuse, aswell as of the percussion-fuse, during transportation by a safety device adapted to be readily removed by hand before loading. This safety device consists, essentially, of two safety-pins, one of which engages the time-f plunger containing the fulminate, andthe other the movable parts of the percussionigniter, said two pins being connected by a cross-bar.

The nature of the invention will best be understood when described in connection with the accompanying drawings, in Which Figure 1 represents a longitudinal section of a combination-fuse 2 5' proved safety attachment. Fig. 2 is a crosssection on the line 2 2, Fig. 1, seen from above, and the time-ring being displaced. Fig. 3 is a cross-section on the line 3 3, Fig. 1, seen from below. Fig. 4 is a side elevation of the fuse and attachment. Fig. 5 is a perspective view of a modified form of the safety attachment.

Similar letters of reference designate corresponding parts throughout the several views of the drawings.

' The'const; uction and mode of action of the combination fuse herein shown are well known and will only be described so far as their connection with the safety device is con 40 corned. The prepared powder within the fixed ring P and the loose ring Mof the time-fuse is ignited at the moment of firing by the time fulminate-hammer A, which by its inertia overcomes the resistance of the retaining-spring 5 B and strikes the firing-pin Q. Simultaneously with the motion of the fulminate-hammer the check-ring E of the percussion-fuse is thrown backwardly over the percussion against the resistance On impact of the fnlminate-hammer 0 of the retaining-spring D.

' ready removal of the same.

provided with my improjectile-3' the fulminate ham mer 0, held against forward movement only by the helical spring F, is thrown forward, together with the spring D and check-ring E, against the firing pin R, thereby causinginstantaneous ignition of the bursting charge of the shell. The i m proved safety device consists of two pins G and H, connected by a cross-bar J in any suit"' able manner. The longitudinal axes of the several parts lie within one and the same p ane. For the sake of brevity the device embodying the two safety-pins and the crosspiece will be designated as a duplex pin.

.To the cross-bar is hinged a spring-ring K,

which is-adapted to secure the duplex pin to the fuse after its insertion, while permitting In the fuse itself are formed t'wo bores-adapted, respectively, for the reception of the pins G and H and said bones being within a the axis of the fuse and through the bridge of the loose powder-ring M and both bores being at right angles tp the axis. The bore adapted for thereception of the upper pin'G passes into the screw-cap L above the upper 7 5' end .of the body N, throughthefulminatehammer A, and terminates in the opposite side of the cap. The bore for the lower pin commences at the bridge of the loose powderoft e fuse, and through the check-ring E, terminating in the opposite part of the body. A screw O is inserted into the screw-cap, and the point of this screw enters the body of the fuse, thereby securing the screw-cap 85 against turning, while its head serves as an abutment, for the ring K of the duplex pin.. Figs. 1 and 4 show the com bination-fuse when in condition for transportation. The pins G and H'of the duplex pin rest in the corre- 9o sponding bores of the fuse, while the crossbar J lies against the outer surface of the fuse. The spring-ring K embraces the screwcap L with lateral play, as shown in Fig. 3, and engages with the lower side of the head 5 of the screw 0. It will be readily seen that with the duplex pin in the position shown in said figures the fulminate-hammer A, the check-ring E, and the ring M are held in place, while the fulminate-hammer O is held I00 plane passing through ringl M, passes through the adjacent body N ainstmov'ernent in the direction of the fir It is desirable to drill the hole for the lower- .fety-pin H at a position of the powder-ring which corresponds to the position for firing .se-shotthat is, in the position in which .e bursting charge .is ignited just beyond e mouth of the gun. The advantage deved therefrom is that whenever case shot 'ing is indicated, and which calls for the iickest readiness for firing, the projectile is ady at once after removal of the duplex pin. Itwill readily be understood that when a mango is made in the position of the ring'M, ee Fig. 2) for time explosion the corref uonding bores in thefuse-body are thrown it of-alinement, and consequently the chamars' containing the prepared powder are efctively closed, and earth or water are'pre-v snted from penetrating into the interior of \e igniter on impact, which would render .e action of the igniter doubtful. g

The pins G and H and the cross-barJ may 'idently bemadc in one. piece, and such a nstruetion I ha ve shown in Fig. 5, in which .e pins and cross-bar are made of one piece Witnesses:

ALFRED WRATZKE, WILLIAM' ESSENWEIN.

of wire bent into the" requisite form and the cross-bar being provided with "an integral ear formed by properly bending the Wire and into which car the flexible ring K is hung.

What I claimas new is- I 1 1. A combination fuse provided with a safety device for transportation comprising two pins adapted to engage respectively with the time-plunger and with the movable parts of the prcussiowigniter and a cross-bar connecting. said pins, substantially as described.

2. A combination fuse provided with a safety device for transportation comprising two pins adapted to engage respectively with the time-plunger and with the rotary powderring, and a cross-bar connecting-the two pins,

substantially as andv for the purpose set forth.

3. A combination-fuse provided with a safety device for transportation comprising ,two pins adapted toengage respectively with the'time-plunger and with the rotary powder:

ring for holding the latter in position forfiring case-shot, so thatthe openingleading'to the percussion-fuse is closed off in any'other position of the powderring and the'entrance of'smut or grit into the percussion-igniter is prevented, substantiallysas described.

In testimony whereof I have hereu'ntoset ,my hand in: the presence of two subscribing i witnesses.

-- j OSCAR HARTMANN. 

